Chinas coastal cities are sinking as seas rise at record speed

Sea levels are rising faster than at any time in 4,000 years, scientists report, with Chinas major coastal cities at particular risk. The rapid increase is driven by warming oceans and melting ice, while human activities like groundwater pumping make it worse. In some areas, the land itself is sinking faster than the ocean is rising. Still, researchers see progress as cities like Shanghai adopt new technologies to stabilize the ground and prepare for the future.